A coeporatiou



Sept. 8, 1931.

H. G. GcssL-:LYIN

ECONOMI ZER Filed March ll, 1931 ffzaw Patented Sept. 8, 1931 UNITEDSTATES .PATENT ortica y HENRYG. GossELIN, F BERLIN, Niiw Heiviiesiainn. essIeNon 'ro Bustin nouNnRY AND MACHINE COMPANY, on BnRLiN, NEW HnMPsiiiR-n, A coNPonATi'oN or Naw HAMPSHIRE ECONOMIZER Appiicatian sied March 11, 193i., serial No. 521,723;

This invention relates to an economizer for utilizing heat from combustion gases which otherwise would be carried out through the chimney and lost. lt is an object of thev invention to provide an econoniizer which is economical in construction, efficient in operation, and easy to keep clean. The particular embodiment of the invention hereinafter described in detail is adapted for use with a domestic heating plant.

Various advantageous features of structure will be apparent to one skilled Vin the art from the disclosure of the invention in the description thereof which follows and on the drawings of which,- Y

Figure 1 is a perspective view of a typical domestic heater having an embodiment of the invention connected therewith.

Figure 2 is a side elevation of the economizer as shown in Figure 1, a portionV of the side wall being broken away to show the interior parts.

Figure 3 is a section Figure 2.

Figure 4 is a section on the line 4 4 of Figure 2.

Referring to the drawings in detail a domestic heater is indicated at 10, this heater being supplied with the usual smoke pipe 11 which leads to a flue in the chimney l2. Between the heater and the chimney the smoke pipe 11 is interrupted by an economizer 13 which may embody the invention. This econornizer, as shown, may consist ofa back plate 14 which carries a pairl of manifolds 15 and 16. These manifolds may, if desired, be cast integrally with the plate 14. The plate 14 is also provided with a pair of connections 17 and 18 which are threaded to receive the ends of an outlet pipe 20 and an inlet pipe 21. Extending from the upper manifold 15 to the lower manifold 16 are a number of pipes 22 which, as shown, may be in Zig-Zag form, or may be coiled or otherwise disposed in `a manner to present a considerable length of piping, and hence considerable surface, to the hot gases within the economizer. As shown, these connecting pipes 22 may each be detachably secured at their respective ends to the manifolds 15 on the line 3 3 of and 16. If desired, each manifold may have an internal partition 23, asshown in Figure 4, dividing the interior manifold into separate chambers. If either manifold is thus provided with a partition, the other `is likeg.

wise provided with a similar partition. "The separate chambers thus formed in the two manifolds are preferably connected respectively with outlet and inlet pipes 24, 25 outl side of the economizer, and'by one or more connect-ing pipes 22 inside the economizer.

Projecting forwardly from the back plate 14 are a pair of side plates 30 and 31,a central bafiie plate 32, a top plate 33 and a bottom plate 34. Secured to the side, top and bottom plates is a front plate 35; As shown, the baffle plate 32 extends from the back plate to the `front plate and from the top plate down to a level somewhat above the bottom plate 34, thus leaving a considerable opening 36' below its lower edge for the passage of combustion gases from one portion of the economiZer to the other. yThe side plates 31 are provided near their upper edges with smoke pipe connections 37 to which the portions of the smoke pipell are attached. The lfront plate is preferably secured in such a manner as to be readily movable to facilitate cleaning of the exterior surface of the pipes 22 so'as to maintain the efficiency of the economizer. A layer of suitable heat insulating material 40'is preferably appliedto the entire outer surface of the econoinizer so as to prevent the excessive escape of heat from the economizer into the surrounding atmosphere. The back plate 14 may beV adjustably mounted on a pair of standards each comprising an upright 41 and a foot 42. The two feet 42 preferably extend forwardly as shown to `provide a stable support for the economizer. The back plate 14 may be secured to the uprights in any suitable manner as by' a pair of collars 43 at'- tached to the plate and fitted on the upright 41, one or both ofthese collars being supplied with the set screw 44 by which the plate may befirmly secured `to theupright. Thus the economizer can beeasily installedat any desired height, Within limits, suitable for convenient connection with the smoke pipe 11.l

In the operation of the economizer, the hot combustion gases from the heater l0 enter one side oi the econonuzer near the top, pass downwardly and under the baille plate, then upwardly 1n the other side of the eeononnzer and out to the chimney l2. The pipes 22 receive considerable heat from the gases to raise the temperature of the water circulating therethrough. The heat thus derived from the combustion gases may be used for any desired purpose. For example the outlet pipe 20 may be connected to the heater 10 so that the economizer serves as a pre-heater for the water entering the heater 10. The separate circulation system through the extra chambers formed by the partitions 23 in the manifolds may be used for any purpose such as heating a radiator in a garage where a temperature of considerably lower degree than that required for a house is suflicient. It is obvious that the heat derived from the economizer can be used in other ways, as desired.

In cases where an oil burner is used in the heater l0, it is usually desirable to have a substantially unobstructed flue from the heater to the chimney when the burner is lighted. For this purpose a damper of suitable size may be provided in the upper portion of the baffle plate 32. This damper may be conveniently controlled by thermo-responsive apparatus indicated at 5l. Such apparatus is well known in the art and need not be described in detail. The damper 50 is open when cold so that the open flue is ready for the starting of the heater. When the burner has been lighted the iiow of hot combustion gases acts upon the control device 51 and causes the damper 50 to close, thus sending the flow of hot gases down and under the baflie plate 32. Vhen the supply of hot gases ceases and the damper 50 cools ofi', the control device opens the damper again.

Various modifications and changes may be made in the embodiment of the invention liereinbefore described without` departing from the spirit or scope thereof as dened in the following claims.

I claim:

l. A heat-economizer comprising a back plate having an upper and a lower manifold thereon, side plates extending forwardly from said back plate, a smoke pipe connection through the upper portion of each said side plate, removable top, bottom and front plates forming a closed box with said back and side plates a baffle plate within said box having three of its side edges contiguous respectively to said back, front and top plates leaving a. clearance between its lower edge and said bottom plate, a plurality of heattransfer pipe unit-s on either side of said baflie` each said unit being attached at its respective ends to said upper and lower manifolds, and an outside pipe connection on each manifold.

2. A heat eeonornizer comprising a casting consistlng of a had: plate with an upper and a lower manifold projecting forwardly therefrom, top, bottoni and side plates extending` forwardly from said back plate, a removable front plate, a. smoke pipe connection through the upper portion of each side plate, a baille plate extending from the back plate to the front plate and from the top plate to a point spaced above the bottom plate, heat-transfer units extending from said upper manifold to said lower manifold, outside pipe connections on said manifolds, and a pair of supporting standards, each said standard comprising an upright shaft adjustably secured to said back plate and a forwardly extending foot at the lower end thereof.

A heat economizer comprising a box having top, bottom, front, back and side plates, an upper and a lower manifold proliecting forwardly from said back plate, a partition in each said manifold forming two chambers therein, heat-transfer units in said box extending from the chambers of said upper manifold to the chambers of said lower manifold, an outside pipe connection to each of said chambers, smoke-pipe connections through the upper portions of said side plates, and a baille within said box extending downwardly from the top plate to a point spaced above the bottom plate.

In testimony whereof I have aiiixed my signature.

HENRY Gr. GOSSELIN. 

